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Johnstown Climate by Month

The graphs below provide an overview of the climate in Johnstown (Ontario), Canada. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for Johnstown

Tue   Nov 05
21°C | 11°C
SW 22 km/h
0.3 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Wed   Nov 06
22°C | 11°C
SW 25 km/h
0.7 mm
broken clouds and slight rain

broken clouds and slight rain

Thu   Nov 07
12°C | 5°C
W 11 km/h
0.4 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

The best time of year to visit Johnstown in Canada

During the months of May, June, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is winter in Johnstown?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Johnstown?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Johnstown?
    The coldest month is February with an average maximum temperature of -3°C.
  • Which is the wettest month in Johnstown?
    October tops the wettest month list with 118 mm of rainfall.
  • Which is the driest month in Johnstown?
    March is the driest month with 61 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.